This allso means that it will be more unlikely that customers will get really "bad egs" when buying Nvidia based GPU in the future, because there are minimum specks that have to be meet in "quality". It allso means a little less variation in prices, but not a lot, because there is no limit how much better you can do than those minimum specks.
But the consern above about losing confidential information is valid, but in anyway companies can buy product from competive manufacturer and examine it in their labs, so I don't think that it is so big problem than we can be afraid of. So situation is not much worse than it is today.
The problem is the extreme overcloking segment. Maybe there should be Nvidia sertifated and free form cards in the market? If you want to have "safe" choice, you can buy Nvidia sertificated card and if you are willing to take the risk, you could chose free specks GPU card and get more speed and maybe shorter lifespan for you GPU. It could be reasonable comromis and allow more new innovations than pure controlled manufacturing.